Adapters form an airtight seal in the neck of a vehicleís power steering pump, allowing for air evacuation All three adapters include an inline, barbed connection for a 1 – 4 internal diameter hose These adapters will work with your Mityvac and most other brands hand vacuum pumps A 90-degree barbed connector, MVA665, is available separately and can be interchanged with the inline connector on MVA661 and MVA662 for applications with limited overhead access Featuring a robust design and construction Kit Includes: Universal power steering bleed adapter MVA660, Ford power steering bleed adapter MVA662, GM power steering bleed adapter MVA661 and instruction sheet